(08-23-2019, 07:55 AM)dave friend Wrote: Cardinality matters for indexing. A very small number of distinct values among a very large number of rows will not produce noticeable efficiency gains. Indexes are B-tree structures. There is little point in searching against a B-Tree when the size of the tree is small. Use indexes with fields with high cardinality to achieve search performance gains versus sequential scans. With that in mind it might make sense to consider multi-column indexes that include the soft delete column. Perhaps even to the point of including soft deletes into the primary key.
I definitely agree with this statement.
